Home / 915,317.70-1,371,421.35-756,687.30

Finding the Fourth Proportional to 915,317.70, 1,371,421.35 and 756,687.30

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Solution

The fourth proportional to 915,317.70, 1,371,421.35 and 756,687.30 is: 1,133,745.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,317.70 : 1,371,421.35 = 756,687.30 : x
  2. Step 2: Convert to fraction form
    915,317.70/1,371,421.35 = 756,687.30/x
  3. Step 3: Cross multiply
    915,317.70x = 1,371,421.35 × 756,687.30
  4. Step 4: Simplify right side
    915,317.70x = 1,037,737,118,493.86
  5. Step 5: Solve for x
    x = 1,037,737,118,493.86/915,317.70
  6. Step 6: Final answer
    x = 1,133,745.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.